Luna Lights at Northwestern raises $70k to reduce night time falls for older
  adults and completes the Healthbox Accelerator
From: Design for America - 02/05/2015

Luna Lights is an automated lighting system that guides older adults to their
destination in dark rooms. Detecting when the user sits up in bed, the motion
sensor triggers a system of small lights to illuminate a path, and then turns
off automatically upon the user's return to his or her bed. The stick-on
lights are portable for a customizable path to any destination and dimly
light up any possible hazards while avoiding the "old" stigma that haunts
many assisting devices. Luna Lights enhance older adults' confidence,
independence, and mobility while reducing in-home falls.

Read the entire article and view a video (3:09) at:
http://designforamerica.com/projects/luna-lights/

Link:
Luna Lights
http://www.lunalights.org/

Related - Design for America:
Improving Driving for those with Disabilities
http://designforamerica.com/improving-driving-for-those-with-disabilities/

Children with Autism (with video 1:14)
http://designforamerica.com/projects/orenda/